Panel lock joint



May 15, 1934. N N 1,959,326

PANEL LOCK JOINT Filed July 18, 1952 INVENTOR Gustav H.Anderson ATTORNE 50 and 13 on all four edges thereof.

Patented May 15, 1934 UNITED STATES PATENT, O IC PANEL LOCK JOINT Gustav H. Anderson, 'New Britain, Conn., as-' signer to The Hart & Hutchinson Company, New Britain, Conm, a corporation or Connecticut Application July 18, 1932, Serial No. 623,056

6 Claims. (01. 189-34) of the above nature in which the side pan members are provided with flanges which are bent into a Z-section, overlapping about the entire periphery of the panel to form a dovetail projection for receiving ornamental concealing molding strips.

A further object is to provide a metal panel of the above nature in which the pan sections can be made of metals which are difficult to spot weld (such as aluminum), and in which differcut kinds or finishes of metals may be incorporated into the one structure, such as a stainless steel trim in combination with a colored background.

A further object is to provide a metal panel of the above nature which will be water-tight and adapted for use on partitions of all kinds, such as lavatories, shower stalls, hospital booths, etc.

A further object is to provide a metal panel of the above nature, which will be simple and rigid in construction, inexpensive to manufacture, easy to assemble, compact, very ornamental in appearance and durable in use.

With these and other objects in view there has been illustrated on the accompanying drawing one form in which the inventionmay be conveniently embodied in practice.

In the drawing, Fig. 1 represents a perspective viewof a completed door panel embodying the invention.

Fig. 2 is a fragmentary perspective view upon an enlarged scale of the, upper left-hand corner of the door panel shown in Fig. 1.

Fig. 3 is an enlarged sectional top view of a portion of one end of the door panel.

Referring to the drawing, in which like reference numerals denote corresponding parts throughout the several views, the numerals 10 and 11 indicate a pair of opposed'shallow pan members, having inwardly extending flanges 12 The flanges 12 and 13 do not extend inwardly sufficiently far to make direct contact with each other, but have divergently inclined extensions 14 and 15, forming an angle of approximately degrees with 55 each other. The extensions 14 and 15 are again formed inwardly into overlapping sections 16 and 17, making intimate contact and providing a substantially tight joint between the two pan members, the projection so formed being of dovetail section, and extending about the whole periphery of the panel.

In order to cover the joint at the edges of the panel, provision is made of four concealing moldj ing strips 19, each of which has a curved outer surface 20 and a pair of inwardly extending slightly inclined flanges 21 and 22 adapted to engage resiliently the inclined flange extensions 14 and 15, over which they are adapted to slide.

The ends of the molding strips 19 are mitered in such a manner that when all four of said strips are slid into position, the four corners thereof will lie flush with one another as shown.

When the panel is to be used as a partition, no I concealing strip 19 is necessary, as in this case the framework in which the panel is fltted covers the joint between the two halves thereof.

The interior of the door panel may also be provided if desired with an interior fllling block 24 of any suitable sound-deadening or stifiening material, as shown in Fig. 3.

It will be understood that any suitable hardware, trimmings or fittings may be attached to the panel according to the desires of the user.

While there has been disclosed in this specification one form' in which the invention may be embodied, it is to be understood that this form is shown for the purpose of illustration only, and that the invention is not to be limited to the specific disclosures, but may be modified and embodied in various other forms without departing from its spirit. In short, the invention includes all modifications and embodiments coming within the scope of the following claims.

Having thus fully described the invention, what is claimed asnew, and for which it is desired to secure Letters Patent, is:

1. In a panel, a pair of pan members having alined inwardly projecting flanges formed in Z section and S-section respectively, portions of said flanges being in overlapping relationship and forming a diverging dovetail projection about the whole periphery of the panel.

2. In a panel, a pair of pan members having alined inwardly projecting flanges formed in Z- section and S-section respectively, portions of said flanges being in overlapping relationship and forming a diverging dovetail projection about the whole periphery of the panel, the edges of said panel being covered by a concealing molding strip slidable over said projection.

3. In a panel, a pair of pan members having alined inwardly projecting flanges formed in 2- section and s-section respectively, portions 01 said flanges being in overlapping relationship and 5 forming a diverging dovetail projection about the first inwardly toward the central plane of the said panel, then inclined outwardly, then inwardly into overlapping relationship between the two sections, the edges of the said panel being covered by a concealing metal molding engaging the outwardly inclined portions 0! the said flange sections..

6. In a panel, a pair or metal pans, each pan having a formed flange with a section extending first inwardly toward the central plane of the said panel, then inclined outwardly, then inwardly into overlapping relationship between the two sections, the edges 01' the said panel being covered by a concealing metal molding engaging and interlocking with the outwardly inclined portions of the said flange sections.

GUSTAV H. ANDERSON.

Ill 

